Acids, Alkalis & Salts

Question 1

Metal + acid

Answer 1

Metal salt + hydrogen

Question 2

Metal carbonate + acid

Answer 2

Metal salt + carbon dioxide + water (Neutralisation)

Question 3

Metal hydroxide + acid

Answer 3

Metal salt + water (neutralisation)

Question 4

Metal oxide + acid

Answer 4

Metal salt + water (neutralisation)

Question 5

Alkali

Answer 5

Soluble base, source of OH- ions, ph >7

Question 6

Acid

Answer 6

Source of H+ ions, ph<7

Question 7

Litmus

Answer 7

Acid=red

Alkali=blue

Question 8

Phenolphthalein

Answer 8

Acid=pink

Alkali=colourless

Question 9

Methyl orange

Answer 9

Acid=red

Alkali=yellow/orange

Question 10

Strong acid

Answer 10

0-3

Question 11

Weak acid

Answer 11

4-6

Question 12

Neutral

Answer 12

7

Question 13

Weak alkali

Answer 13

8-10

Question 14

Strong alkali

Answer 14

11-14

Question 15

Moles in a solid

Answer 15

Mass/RFM

Question 16

Moles in a liquid

Answer 16

Concentration x volume

Question 17

Moles in a gas

Answer 17

Volume (in dm3)/24

Question 18

Burette vs Pipette?

Answer 18

Burette = graduated measurements (0-50cm3)
Pipette = 1 volume only

Question 19

Soluble?

Answer 19

Nitrates
Sodium compounds
Potassium compounds
Ammonium compounds
Most chlorides (ex. Ag, Pb)

Question 20

Insoluble?

Answer 20

Most carbonates
Most hydroxides (CaOH = slightly soluble)
(Ex. K, Na, NH4)

Question 21

Common acids

Answer 21

HCl = Hydrochloric
H2SO4 = Sulphuric
HNO3 = Nitric

Question 22

Prepare an insoluble salt from two soluble reactants

Answer 22

Precipitation

Question 23

Prepare a pure, dry sample of a soluble salt from an insoluble reactant

Answer 23

Excess solid method

Question 24

Prepare a pure, dry sample of a soluble salt from an acid and an alkali

Answer 24

Titration